package com.sky.service.impl;

import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.CategoryService;
import com.sky.utils.ResultUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * 分类业务层
 */
@Service
@Slf4j
@RequiredArgsConstructor
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    private final CategoryMapper categoryMapper;
    private final DishMapper dishMapper;
    private final SetmealMapper setmealMapper;

    /**
     * 新增分类
     *
     * @param categoryDTO
     */
    public Result<String> save(CategoryDTO categoryDTO) {
        Category category = new Category();
        //属性拷贝
        BeanUtils.copyProperties(categoryDTO, category);

        //分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);

        //设置创建时间、修改时间、创建人、修改人
/*        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());*/
/*        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());*/
        boolean res = super.save(category);
        return ResultUtil.getResult(res);
    }

    /**
     * 分页查询
     *
     * @param categoryPageQueryDTO
     * @return
     */
    public Result<PageResult> pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        int page = categoryPageQueryDTO.getPage();
        int pageSize = categoryPageQueryDTO.getPageSize();
        LambdaQueryWrapper<Category> wrapper = new LambdaQueryWrapper<>();
        wrapper.like(StrUtil.isNotBlank(categoryPageQueryDTO.getName()), Category::getName, categoryPageQueryDTO.getName())
                .eq(ObjUtil.isNotNull(categoryPageQueryDTO.getType()), Category::getType, categoryPageQueryDTO.getType())
                .orderByAsc(Category::getSort)
                .orderByDesc(Category::getCreateTime);
        Page<Category> res = super.page(Page.of(page, pageSize), wrapper);
        return Result.success(new PageResult(res.getTotal(), res.getRecords()));
    }

    /**
     * 根据id删除分类
     *
     * @param id
     */
    public Result<String> deleteById(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        //删除分类数据
        boolean res = super.removeById(id);
        return ResultUtil.getResult(res);
    }

    /**
     * 修改分类
     *
     * @param categoryDTO
     */
    public Result<String> update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        //设置修改时间、修改人
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());

        boolean res = super.updateById(category);
        return ResultUtil.getResult(res);
    }

    /**
     * 启用、禁用分类
     *
     * @param status
     * @param id
     */
    public Result<String> startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .build();
        boolean res = super.updateById(category);
        return ResultUtil.getResult(res);
    }

    /**
     * 根据类型查询分类
     *
     * @param type
     * @return
     */
    public Result<List<Category>> list(Integer type) {
        LambdaQueryWrapper<Category> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ObjUtil.isNotNull(type), Category::getType, type)
                .eq(Category::getStatus, 1)
                .orderByAsc(Category::getSort)
                .orderByDesc(Category::getCreateTime);
        List<Category> list = super.list(wrapper);
        return Result.success(list);
    }
}
